Diseases of oak (Quercus spp.)

Phillips, D. H.; Burdekin, D. A.

doi:10.1007/978-1-349-10953-1_10

Cited by 2 publications

(2 citation statements)

References 15 publications

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“…Changes caused by elevated CO 2 concentration can influence insects directly, as evidenced by numerous studies [2,[23][24][25]. Moreover, the effects of pathogens [26][27][28] or leaf eating insects [29] in plants is most often assessed individually and not taking into account their interaction, which can result in a decreased [30] or an increased synergistic activity [31] influencing plant health. Increased levels of tree damage after combined attack by several pathogens, compared to damage resulting from separate infections, have been previously recorded [32].…”

Section: Introductionmentioning

confidence: 99%

Growth Rates of Lymantria dispar Larvae and Quercus robur Seedlings at Elevated CO2 Concentration and Phytophthora plurivora Infection

Milanović

Milenković

Dobrosavljević

et al. 2020

Forests

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Interactions between plants, insects and pathogens are complex and not sufficiently understood in the context of climate change. In this study, the impact of a root pathogen on a leaf-eating insect hosted by a tree species at elevated CO2 concentration is reported for the first time. The combined and isolated effects of CO2 and infection by the root pathogen Phytophthora plurivora on English oak (Quercus robur) seedlings were used to assess growth rates of plants and of gypsy moth (Lymantria dispar) larvae. For this purpose, two Q. robur provenances (Belgrade and Sombor) were used. At ambient CO2 concentration, the relative growth rate of larvae consuming leaves of plants infected by P. plurivora was higher than those consuming non-infected plants. However, at elevated CO2 concentration (1000 ppm) higher relative growth rates were detected in the larvae consuming the leaves of non-infected plants. At ambient CO2 concentration, lower growth rates were recorded in L. dispar larvae hosted in Q. robur from Belgrade in comparison to larvae hosted in Q. robur from Sombor. However, at elevated CO2 concentration, similar growth rates irrespective of the provenance were observed. Defoliation by the gypsy moth did not influence the growth of plants while P. plurivora infection significantly reduced tree height in seedlings from Belgrade. The results confirm that a rise of CO2 concentration in the atmosphere modifies the existing interactions between P. plurivora, Q. robur, and L. dispar. Moreover, the influence of the tree provenance on both herbivore and plant performance at elevated CO2 concentrations suggests a potential for increasing forest resilience through breeding.

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Section: Introductionmentioning

confidence: 99%

Growth Rates of Lymantria dispar Larvae and Quercus robur Seedlings at Elevated CO2 Concentration and Phytophthora plurivora Infection

Milanović

Milenković

Dobrosavljević

et al. 2020

Forests

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“…Gnomoniopsis smithogilvyi (= G. castaneae) is one of the causal agents of chestnut fruit rot (Shuttleworth et al 2016). Amphiporthe leiphaemia and Caudospora taleola are common but usually weak canker pathogens of oaks in Europe (Phillips and Burdekin 1992). In addition, several Coryneum species occur on chestnut and oak trees (Sutton 1975).…”

Section: Introductionmentioning

confidence: 99%

New species and records of Coryneum from China

2018

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Following the abandonment of dual nomenclature and the implementation of single-name nomenclature for pleomorphic fungi, Coryneum was considered to have priority over Pseudovalsa and was recommended for use. Currently, Coryneum is the only genus in the family Coryneaceae (Diaporthales). However, DNA sequence data are lacking for most Coryneum species, and no detailed phylogenetic analyses of the genus are yet available. In the present study, fresh Coryneum samples were collected from chestnut (Castanea) and oak (Quercus) trees in China and morphologically compared with accepted Coryneum species. Based on morphological characteristics, they were identified as one known species, Coryneum castaneicola, and three novel species described here as C. gigasporum, C. sinense, and C. suttonii. Conidial dimensions and host association were considered major characters for species distinction. The previously unknown sexual morph of C. castaneicola is reported and described. A phylogenetic analysis of nuc rDNA internal transcribed spacer (ITS1-5.8S-ITS2 = ITS) and large subunit (28S) sequence data of a representative matrix of Diaporthales confirmed Coryneaceae to represent a monophyletic clade. A phylogenetic analysis of a combined sequence matrix containing the ITS-28S rDNA, the translation elongation factor 1-α (TEF1α), and the second largest subunit of the RNA polymerase II (RPB2) of the four Chinese and four additional European Coryneum species was performed, confirming the distinctness of these novel species.

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Diseases of oak (Quercus spp.)

Cited by 2 publications

References 15 publications

Growth Rates of Lymantria dispar Larvae and Quercus robur Seedlings at Elevated CO2 Concentration and Phytophthora plurivora Infection

Growth Rates of Lymantria dispar Larvae and Quercus robur Seedlings at Elevated CO2 Concentration and Phytophthora plurivora Infection

New species and records of Coryneum from China

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